I?m finding difficulties balancing traffic over multiple links between an Hybrid (Catos/IOS) Cisco Cat 6513 and a Cisco 12000 router managed by my ISP. There are 3 gigabit links between the two devices and I have configured three subnets /30 mapped with three different vlans. All subnets are in the same nssa area in my ospf . Now I correctly see three neighbors on the three vlans but in both routing table and ospf database I only see one ip route for each destination (always the one with higher ip address). Does anyone know something that can help me?